Infants with red mucus stool, the following conditions are common: 1, bacterial infectious gastroenteritis. Most have a history of unclean diet, or digestive tract infection children have a history of contact, the baby appears abdominal pain, stool frequency increased, mucus-purulent blood stool, mostly accompanied by fever, poor mental status, loss of appetite, etc.. The stool routine laboratory tests can be seen red blood cells, white blood cells and pus cells, the need for active anti-infection treatment. 2, intestinal overlap. Most of them have gastrointestinal discomfort or pediatric diarrhea disease and other triggers, and the baby has paroxysmal abdominal pain and a salami-like mass in the abdomen when touched. Severe cases will be accompanied by vomiting, after 4-6 hours of abdominal pain, the stool will appear red mucus stool, the baby is depressed, need to go to the hospital in a timely manner to conduct X-ray abdominal plain film examination clearly.